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An experimental study of coincidence grain boundary structure using displacement fringes
Author(s) -
Pond R. C.,
Smith D. A.,
Clark W. A. T.
Publication year - 1974
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.1974.tb04642.x
Subject(s) - coincidence , grain boundary , stacking fault energy , displacement (psychology) , boundary (topology) , interference (communication) , sensitivity (control systems) , stacking fault , optics , materials science , stacking , physics , condensed matter physics , computational physics , dislocation , nuclear magnetic resonance , mathematics , channel (broadcasting) , mathematical analysis , computer science , microstructure , alternative medicine , electronic engineering , psychotherapist , computer network , pathology , engineering , psychology , metallurgy , medicine
SUMMARY This paper describes how a transmission electron microscope may be used to study rigid body displacements between coincidence related grains. Computer calculations have predicted that such displacements reduce grain boundary internal energy in metals by relieving atomic over‐crowding. Displacements are revealed as fringe patterns by a Bloch wave interference mechanism resembling that which gives rise to stacking fault fringes. The sensitivity of the technique in detecting very small displacements and its potential applications are discussed.